Would you think twice about sharing a mindless "I'm so bored" post on social media if you knew that research shows that people who do so experience higher rates of heart attacks and strokes? What's worse, research that ties social media use to emotional stability/instability is making its way into the hands of people that you probably don't want to be privy to such information: recruiters, hiring managers, and employers. Here's what you need to know about what your social media sharing is saying about you.